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Vikentia [17]
3 years ago
14

Is √m+n = √m + √n for all values of m and n? Explain why or why not.

Mathematics
1 answer:
lukranit [14]3 years ago
6 0

Step-by-step explanation:

√(m + n) = √m + √n

Square both sides:

m + n = m + 2√(mn) + n

Simplify:

0 = 2√(mn)

mn = 0

The equation is only true if either m or n (or both) is 0.

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What is the minimum number of months' worth of living expenses that should be in an emergency fund?
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This is not so much a calculable math problem as a common sense one. Based on your spending and income a 2 month fund pillow should be suffice. Don't hold me to this answer as you should decide this for yourself.
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3 years ago
Find the value of 21 + 4(3/\2 - 5). The two after the three is an exponent.
Yuri [45]
First. distribute and multiply the the 4 to the 3^2 and the -5
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8 0
3 years ago
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What is 37+50-43+336+1.456
Ipatiy [6.2K]

Answer:

381.456

Step-by-step explanation:

3 0
2 years ago
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a parabola has its vertex at 1,1 and passes through the point -2,-2. Find the equation of this parabola
Jet001 [13]

Answer:

The vertex form of the equation is y = -\frac{1}{3}( x-1)^{2} +1.

Step-by-step explanation:

You will use the equation y=a(x-h)^{2} +k to solve this parabola. (h, k) is the vertex. So, we plug this into the equation to get y= a(x - 1)^{2} +1.

Then, we substitute the point as our x and y to get -2 = 9a+1 (a lot of simplifying was done here). Then, add 2 to the right side of the equation and isolate the 9a to get 9a = 3. Finally, divide by 9 on both sides to get a=\frac{1}{3}.

Now, substitute your a back into the equation to get y = -\frac{1}{3}(x-1)^{2}+1.

This is in vertex form. If the answer is needed in standard form, simply distribute and simplify to get y = -\frac{1}{3} x^{2} +\frac{2}{3} x+\frac{2}{3}.

5 0
3 years ago
(-w^3 + 8w^2 – 3w) + (-8w^2 + w + 3) =
kherson [118]
The expression simplified is -w^3-2w+3

I hope this helped
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3 years ago
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